Pochodna o rany julek: Policzyć y''(x) jeśli wiadomo że x=2cost ∧ y=sint

chichi: Reguła łańcuchowa

pudel i pipel: x=2cost y=sint ______________

dy		dx
	=cost,		=−2sint
dt		dt

__________________________

dy
	=−0.5ctgt
dx

___________________________

dy		(−sin2t−cos2t)
	=−0.5
dxdt		sin2t

____________________________

d2y		dt		1
	*		=−0.25*(
dxdt		dx		(1−cos2t)(sint)

_______________________________

d2y		1
	=y''(x)=−
dx2		(4−x2)(√1−0.25x2)